JB Hi-Fi has joined the queue of retailers reporting a slowdown in the wake of May's federal budget. Photo: Glenn Hunt

The new guidance suggests that JB-Hi-Fi, like many discretionary retailers, has experienced a sharp drop in sales growth momentum in the June quarter.

However, JB Hi-Fi still expects to report full-year net profit between $126 million and $129 million, up 8.3 per cent to 10.8 per cent.

More than half a dozen retailers including Pacific Brands, Super Retail Group, Funtastic, footwear chain RCG Group and Noni B have downgraded earnings forecasts in the last month after a sharp fall in sales post the May budget.

JB Hi-Fi's outgoing chief executive Terry Smart has brought forward his departure date by two months and will leave at the end of June.

Mr Smart was originally due to hand the reins to his successor, Richard Murray, in August.

"The board thanks Terry for his outstanding contribution to the company over the past 14 years, wishes him all the best for the future and looks forward to Richard taking on the role of CEO and continuing to deliver on JB Hi-Fi's successful model," said chairman Greg Richards.

During Mr Smart's tenure as CEO, JB Hi-Fi's sales have risen from $3.1 billion to $3.6 billion and net profits from $105 million to between $126 million and $129 million this year.